Packing material



May 7, 1940.

INVENTOR I W////am Hfler amen BY W ATTORNEY L Patented May 7,1946

.- UNITED STATES PACKING MATERIAL William A. Hermanson, Boston Mass.

Application November 1a, 1937, Serial No. 115,489

The present invention relates to a protective sheet used for packing pieces which must be protected from scratches or dents, such for instance as polished furniture, woodwork and also 5 glass, stone and fabricated materials. In the packing of such articles, for instance, furniture with high polished surfaces, it is important to have'a packing pad which has a very soft yielding, extensible surface which will yield quickly under pressure so as not to allow scratches from particles that may be gathered on the surface or on-the material. It is also necessary in protecting such surfacesfor the pad to "have suflicient cushioning effect so that heavy pack- 15 do not project through the material and inlure or dent the polished surfaces.

In addition to this a commercial acceptable padding must also be within a suitable price range asthe packing and shipping of the article merely adds cost to the article without course showing its effect on the production of a better article itself. In order to produce such material within the' necessary price range, the applicant has constructed a packing pad of such materials that the desired results are accomplished at comparatively exceptionally low cost. ,The invention will be more fully described in connection with the drawing illustrating the pad. In the drawing- Figure 1 shows a face view of the pad with a fragment of the top section removed and,

Figure 2 shows a section taken on the line 2-2 of Figure i.

In the drawings the top sheets of the pad. I, l, etc.,. with which-the surface to be protected coma in contact, comprises a long flbred pulp or paper which will take a high degree of crep ing and which in fact is creped to a high degree so that it will yield more readily than with the ordinary creping. These long flbred thin sheets are preferably sulphite and with only a small quantity of ground wood or only chemical pulp. l'urther these sheets are'preferably absorbent for grease oil and moisture. These sheets are combined with a plurality of sheets'or coarsely creped paper, 2, 2, .2, which has a high percentage of ground'wood or mechanical pulp, and which in its coarse creping provides a lower-degree of creping and therefore less flexibility than the surface sheets nearest the surface to be protectcd- In this combination there an preferably ing materials such as corrugated board, wood slats or the like in which the pieces are crated' a greater number of coarsely creped sheets than finely creped sheets Joined together. With regard to the thickness of the sheets, these may be relatively of the same thickness, but it is preferable in cases to have the surface sheets some- 5 what heavier and stronger than the under sheets of paper. 1

A top backing surface o1 wax or glazed paper may also be used although the combination of the two crepe sheets may sufllce for the protective l0 material. This material is not only a protection against dents and scratches but also serves as a protection against rapid for excessivetemperature changes inthat thematerial is a substantially good heat insulating element. If desired, and it is preferable in some cases, the surface ,sheets may be calendered and the coarsely creped sheets uncalendered, with the latter type exceeding greatly the former type in thepile.

The same combination however may be used with the finely creped sheets uncalendered. The sheets may be pressed together in spots by an embossing machine as indicated by i, 5, 5, etc.,

' Having now described myinvention, I claim:

1. A wood pulp cellulose padding composed of a multiple number of adjacently arranged coarsely creped layers and a multiple nmnber of adjacently arranged finely creped layers, said coarsely creped layers exceeding in number said finely creped layers and said coarsely creped layers having a higher percentage of ground wood .pulp and said flnelycreped layers consisting essentially of long flbered pulp and'constituting the surface layers adapted to come in contact with the surface to be protected, all of said layers being joined in face to face relationship with ,each other by embossing the same in spots. 2. A wood pulp cellulose padding as in claim 1, composed of a multiple number of finely and coarsely creped layers, said coarsely creped layw ers having a higher percentage of ground wood than said finely creped layers, said-finely creped layers being calendered and said coarsely creped layers being uncalendered.

3. A cellulose padding as of a multiple vnumber of adjacentiy arranged .coarsely creped layers and a multiple number of adjacently arranged finely creped layers and a top backing sheet of moisture proof material positioned adjacent to said coarsely creped lay- 5o ers and means attaching said sheets in face to face relationship by embossing the same in spots,

, 1 WILLIAM A. HERMANBON.

in claim 1, compos 

